Write a C++ value returning function that 1. takes the length of the two sides of a right triangle, and computes and returns the perimeter of the triangle 2. receives a floating-point number and returns the fractional part of that number. For example, if the incoming value of x is 16.753, the function returns the value 0.753. 3. returns the smallest of three integer parameters. 4. determines whether a character entered is an alpha numeric character. Returns true if it is an alpha numeric character, returns false otherwise. 5. determines whether an integer value is a prime number. Returns true if it is a prime number, returns false if it is not. 6. Determines whether an integer value is a perfect number or not